Mondo Description Any Noonan syndrome in which the cause of the disease is a mutation in the LZTR1 gene.

Uniprot Description A form of Noonan syndrome, a disease characterized by short stature, facial dysmorphic features such as hypertelorism, a downward eyeslant and low-set posteriorly rotated ears, and a high incidence of congenital heart defects and hypertrophic cardiomyopathy. Other features can include a short neck with webbing or redundancy of skin, deafness, motor delay, variable intellectual deficits, multiple skeletal defects, cryptorchidism, and bleeding diathesis. Individuals with Noonan syndrome are at risk of juvenile myelomonocytic leukemia, a myeloproliferative disorder characterized by excessive production of myelomonocytic cells.

Disease Ontology Description A Noonan syndrome that has_material_basis_in heterozygous mutation in the LZTR1 gene on chromosome 22q11.